Bizarre lip sync problem with Philips 46PFL9705H/12

Hi

I have a new Philips 46PFL9705H/12 with firmware 0.140.034. I have a Humax Foxsat HDR feeding it via HDMI. I have noticed some very strange lip sync issues. For some, only some programs serious lip sync problems occur. It is Standard Definition programs that have the issue. And it doesn't occur on most of the programs I watch, and even stranger it gets worse in different scenes of the problem programs (and gets better in other scenes).

After a lot of time and effort I am 99.9% sure it is the new Philips TV that is at fault (I tried the Humax via HDMI on a Sony TV and there was no problem (with the same programs - they're recorded on the Humax)

After attempting to trouble shoot the issue I discovered switching the TV's picture mode to "Game" solves the lip sync issue but I don't want to use "Game" mode because the picture quality is inferior.

Are you using an AV amp? If so then see if your amp has an option to adjust delay time. 160ms should be sufficient.
If you're not using an AV amp or can't change it's delay then I think there's also a delay setting on the Foxsat HDR. Try changing this instead.
Also, is your Foxsat HDR set to output everything at 1080i? This will reduce the up-scaling the TV has to do on SD stuff, and possibly reduce delay.

The delay on the TV is caused by the 400hz mode and the motion processing under the Pixel Plus menu. The reason game mode is okay is because these two modes are turned off in this preset to allow responsive gaming.
This is normal for a lot of TVs, particularly those with hefty motion processing.

I have had sync problems occasionally from the Foxsat but they also happened on my previous (Samsung) TV too. By doing the above it is minimised, I very rarely notice it, if at all.

yes i have reported this issue on another thread with my 58PFL9955, it varies, sometimes worse than others, i also have foxsat HDR and it doesnt happen on another panel. - very frustrating indeed

Quaddy, thanks for confirming the issue. It's good to know that it's not just my TV.

Originally Posted by MrColobus

Hello

I also have a 46PFL9705 too, and a Foxsat HDR.

Are you using an AV amp? If so then see if your amp has an option to adjust delay time. 160ms should be sufficient.
If you're not using an AV amp or can't change it's delay then I think there's also a delay setting on the Foxsat HDR. Try changing this instead.
Also, is your Foxsat HDR set to output everything at 1080i? This will reduce the up-scaling the TV has to do on SD stuff, and possibly reduce delay.

The delay on the TV is caused by the 400hz mode and the motion processing under the Pixel Plus menu. The reason game mode is okay is because these two modes are turned off in this preset to allow responsive gaming.
This is normal for a lot of TVs, particularly those with hefty motion processing.

I have had sync problems occasionally from the Foxsat but they also happened on my previous (Samsung) TV too. By doing the above it is minimised, I very rarely notice it, if at all.

Hope this helps

No I'm not using an external amp. And unfortunately I can't set a delay on the Humax because it only happens on certain channels and even then only on certain programs.
You make a very interesting point about the 400Hz being the culprit. I'll check it out when I get home this evening.
I'll also check that the Humax Foxsat HDR is set to output everything at 1080i. That could explain why I don't see the issue on HD channels, but only on certain SD channels.

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